Answer:
Contrast
Explanation:
While all of of the answers are all about telling the difference between multiple things, contrast is the most specific for this situation: instead of being at the mall like other teens, Malia is helping researchers diagnose cancer in animals. Contrast is when you compare two drastically different things or ideas. The comparison between the other teens and Malia is pretty drastic.
Category is when you separate things into specific groups for their differences. That is not really what's happening here. The author is not separating Malia and the teens into groups; Malia is just being different from the other teens.
Analogy is when you use certain things to symbolize other things. For example, you could say that pencils and paper are like windows into the mind. You can also use similes and metaphors in analogies, too. An analogy is not being used in the text. Maria or the teens aren't really used to symbolize something obvious.
Comparison is when you see the difference between multiple things. It is like when you are shopping for an apple: you see a moldy apple and a fresh one. The fresh one looks less dirty than the moldy one, so you choose the fresh one. This is comparing two or more things. While the text was comparing the teens and Malia, it wasn't really pointing out their similarities and differences. It just said that the teens were at the mall while Maria worked with scientists.
